JPS6323084A - Pipe joint device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention (2) relates to a pipe joint device in which square pipe ends communicating with a connecting side are fluidly sealed in a flange shape and are connected to each other. The bin drive is equipped with a heat exchanger to heat the combustion air with a portion of the heat contained in the drive exhaust gas stream.

In this case, it is possible, for example, to direct the exhaust gas stream in the direction of a heat exchanger through which the compressed air is passed, or from a tube bank in the direction of an exhaust gas channel, or, for example, to conduct heated compressed air flowing out of a tube bank. the combustor in question, so in this case:
In particular, tube arrays and fittings are required to feed the combustion chamber.

In all such or similar cases, the conduits in question and their flange connections must be placed or attached as best as possible within the few available built-in space relationships. The spatial integration relationship means that the pipe flange connection in question is accessible from only one pipe side or from above or from below for assembly and disassembly purposes, but at the same time the pipe flange connection as a whole is accessible from above or below. There is a requirement that the prerequisites for optimal fluid or gas sealing be met throughout the periphery. Particularly with regard to the heated gas flow to be conducted, such a flange connection must also be constructed in such a way that it can withstand high temperatures and has low wear.

The previously known flange connection concepts are: - rectangular;
A square cross section also satisfies the prerequisites for a good seal; however,
On the other hand, it presupposes the existence of a large number of threaded connections distributed over the periphery in a --like manner, which therefore essentially
This forces the possibility of access from all sides to the pipe flange for assembly or disassembly.

Within the framework of the above-mentioned problem, the present invention mainly focuses on
Despite being accessible only from one side or from above or below, it can be assembled or disassembled extremely easily and the entire opposite side tube The object of the present invention is to obtain a flange joint device of the type mentioned in the introduction which is optimally sealable around the connection and is extremely heat resistant.

, This problem is solved by the features of item 1 of the "Claims".

In this way, it is possible to slide one tube end provided with a flange into the corresponding groove of the frame from the accessible side or from above.

The gasket cord considered in the example simultaneously covers three sides of the pipe for complete flange insertion into the frame surrounding the sides of the 311 m pipe in question. Premises can be made for a secure seal containing.

Sealing all around the perimeter due to operational requirements is the simplest,
For example, this is realized by a fastening rung screwed from above onto the open side of the frame, by which the flange is sealed and held in the peripheral groove of the frame surrounding the 3rfIJ side of the tube. and are held together in a clip-like seal over the open insertion side by the remaining frame portion.

Therefore, for example, by means of two or three screws, the fastening rung, and thus the entire flange connection, can be easily finished assembled or disassembled after one flange has been inserted. Separately, done from one side or from above.

JLJL Hereinafter, the present invention will be described in detail with reference to FIGS. 1.2 and 3 of the accompanying drawings showing embodiments thereof.

1 and 2 show a tube flange connection according to the invention, here for example in a rectangular tube connection end.

In this case, the first tube end 1 is designed as a rectangular flange 2, which can be accessed from the outside by 3
It is inserted into the peripheral groove 3 of the frame 4 of the second tube end 5, which encompasses the lateral end face. The side of the frame 4 that is open to the outside or the insertion side is provided with a double screw S screwed onto it, for example, in the insertion process that has been completely carried out.
l, S2, S3) Covered by a fastening bar 6 which surrounds the frame 4 and the flange 2 in a clip-like manner along the fourth end face of the two remaining tube ends.

For reliable sealing of the pipe flange connection, sealing means must be arranged between the outer end face of the flange 2 and the corresponding facing face of the flange 4 or the fastening bar 6. For example, a seal By way of means, a gasket cord 7 (FIGS. 1 and 3) can be provided, which gasket cord 7 is at least partially inserted into a spring 8 machined into the flange 2 on the outside thereof. Can be embedded. The gas get cord 7 is then closed and bent around the corner of the flange or groove in question. Therefore, depending on the required stiffness of the seal,
In the operating state, a gap F (Fig. 3) is placed at the bottom between the metal end face of the flange 2 and the bottom face of the groove in question;
In particular, as can be seen from FIG.
It can be formed by being slightly reduced in a --like wedge shape in the direction of the opposing groove bottoms of the frame 4 when viewed from above.

Furthermore, the mutually opposing surface parts 9.10 of the frame 4, as well as the corresponding flange parts, can also be of reduced size.

The slightly wedge-shaped reduction described above is advantageous for assembly or disassembly and is also particularly advantageous for the placement of the best-like seal in the circumferential groove 3 of the frame 4 of the flange 2. act.

The best seal press-fit desired for operation is when the fastening bar 6 is
After R, it is firmly connected to a part of the frame 4 that is freely accessible on one side, and is thus achieved, for example, when it is screwed.

The invention can advantageously be implemented in completely square or rectangular conduits. However, the invention can also be implemented advantageously in conduits having a generally circular cross-section, in which case:
Only the tube end sections that adjoin each other in the flange connection have a square or rectangular cross section.

11 to 1 Since the present invention has the above-described structure and operation, it can be assembled or disassembled extremely easily even though it is accessible only from one side. ,
Furthermore, it is possible to exhibit the excellent effect of providing a pipe connecting device that can optimally seal the entire circumference.

[Brief explanation of drawings]

FIG. 1 is a cutaway plan view showing two adjacent tube ends with a flange coupling device according to the present invention, FIG. 2 is a cutaway view taken along line $111-11 in FIG. 1, and FIG. C in Figure 1
It is an enlarged detailed view of the part. 1... Pipe end, 2... Flange, 3... Peripheral groove,
4... Frame, 5... Pipe end, 6... Fastening crosspiece, 7...
・Seal code, 8...Clear, 9.10...Surface part, 1
1.12... surface part. Procedural amendment (method) August 28, 1986

Claims (1)

[Claims] 1. A first pipe end (1 ) is a square peripheral flange (2)
is formed, and this flange connects to the second pipe end (5
) is inserted into the peripheral groove (3) of the frame (4) which is open on one side, and the open side of the frame (4) is covered by the fastening bar (6) fixed to it, and this A pipe joint device characterized in that the crosspiece holds the bordering frame (4) portion and flange (2) portion in a peg-like manner. 2. The pipe joint device according to claim 1, wherein the fastening bar (6) is screwed onto the open side of the frame (4). 3. The outer end surface of the flange (2) and the frame (4) or fastening crosspiece (
6) The pipe joint device according to claim 1 or 2, wherein a sealing means is disposed between the attached opposing surface. 4. As a sealing means, a gasket cord (7) is provided, which is at least partially embedded in a groove (8) machined in the flange (2) on the outside. , the pipe joint device according to item 2 or 3. 5. The flange (2) is continuously and uniformly reduced in the direction from the fastening bar (6) to the opposing groove bottom of the frame (4). The pipe joint device according to any one of the above. 6. Mutually opposing surface parts (9, 10) of the frame (4)
6. A pipe coupling device as claimed in claim 5, in which the peripheral groove (3) has a continuous and uniform reduction in size as well as the corresponding flange parts together with the face parts (11, 12) of the peripheral groove (3).